Fea of mountain bike frame by alfred munoz
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FEA of Mountain Bike Frame by: Alfred Munoz. Outline. Forces from static load (case1) Results (disscusion). Forces from static case 1. Material is CU92 aluminum. Forces from static case 1 Weight Distribution. 70 percent. 30 percent. Forces from static case 1 (71). X-comp. Y-comp.

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Outline
Outline

  • Forces from static load (case1)

  • Results (disscusion)


Forces from static case 1
Forces from static case 1

Material is CU92 aluminum


Forces from static case 1 weight distribution
Forces from static case 1 Weight Distribution

70 percent

30 percent


Forces from static case 1 71
Forces from static case 1 (71)

X-comp

Y-comp

TT=117343.2 Nmm

(Torque at top)

TB=101717.336Nmm

(Torque at bottom)

378.5 N

130.34 N

TB

TT

y

30 percent of 300lb

400.35 N

X


Forces from static case 1 72
Forces from static case 1 (72)

D=860mm

y

x

70 percent 300 lbs(1334.5 N) equals 934.15 N

X-comp=705.01N

Y-comp=612.86 N


Forces from static case 11
Forces from static case 1

X-comp=1269.18 N

Y-comp=412.38 N

D=203mm

Force from a 300 lb rider

(1334.5 N)

y

x



Results of fea1
Results of FEA

Areas of concern



Results of fea3
Results of FEA

Less stress in the middle

Therefore room for optimization of material thickness


Results of fea4
Results of FEA

Results of frame


Fea results
FEA Results

Area of symetrical stress on the top tube


Future work
Future work

  • Apply FEA with entire frame

  • Run more cases with dynamic loading

  • Model tubes of frame with varying cross-section (thinner in darker blue areas)

  • Add welding at contacts and add gussets

  • Perform corrections to Pro-E model with

    the cross-section removed from the places where the tubes intersect



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